1.

A bus starting from rest masses with a uniform acceleration of 2 m/s for 4 minutes. a)find the speed acquired. b)find the distance travelled ​

Answer»

GIVEN :

  • Initial velocity, u = 0 m/s.
  • Acceleration, a = 2 m/s².
  • TIME, t = 4 min.

TO FIND :

CONCEPTS USED :

  • Newton's first law of motion.
  • Newton's third law of motion.

SOLUTION :

To find the speed, v = ?

Using the Newton's first equation of motion,

V = u + at.

Substitute the given values in the above equation.

\implies V = 0 + 2 × 240

\implies V = 0 + 480

\large \fbox \red {\sf Speed \ = \ 480 \ m/s}

•°• Therefore, the speed acquired is 480 m/s.

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Now,

To find the distance travelled = ?

Using the third equation of motion,

S = ut + 1/2 at²

Substitute the given values in the above equation.

\implies S = 0 × 240 + 1/2 × 2 × 240 × 240.

\implies S = 0 + 57600

\large \fbox \red {\sf Distance \ = \ 57600 \ m}

•°• Therefore, the distance travelled is 57600 meters.

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬


Discussion

No Comment Found

Related InterviewSolutions